django.get_version - python examples

    def get_version(self):
        """
        Return the Django version, which should be correct for all
        built-in Django commands. User-supplied commands should
        override this method.

        """
        return django.get_version()

    def get_version(self):
        """
        Return the Django version, which should be correct for all built-in
        Django commands. User-supplied commands can override this method to
        return their own version.
        """
        return django.get_version()

    def get_response_data(self, response):
        import django
        from distutils.version import LooseVersion

        self.astertEqual(200, response.status_code)

        if LooseVersion(django.get_version()) >= LooseVersion('1.9'):
            return response.json()
        return response.data

    def _media(self):
        js_files = ['django_extensions/js/jquery.bgiframe.min.js',
                    'django_extensions/js/jquery.ajaxQueue.js',
                    'django_extensions/js/jquery.autocomplete.js']

        # Use a newer version of jquery if django version <= 1.5.x
        # When removing this compatibility code also remove jquery-1.7.2.min.js file.
        if int(django.get_version()[2]) <= 5:
            js_files.insert(0, 'django_extensions/js/jquery-1.7.2.min.js')

        return forms.Media(css={'all': ('django_extensions/css/jquery.autocomplete.css',)},
                           js=js_files)

    def __init__(self, config=None, **inline):
        if config is None:
            config = getattr(django_settings, "ELASTIC_APM", {})
        if "framework_name" not in inline:
            inline["framework_name"] = "django"
            inline["framework_version"] = django.get_version()
        super(DjangoClient, self).__init__(config, **inline)

@register.simple_tag
def custom_admin_media_prefix():
    import django
    if "1.4" in django.get_version():
        from django.conf import settings
        return "".join([settings.STATIC_URL,"admin/"])
    else:
        try:
            from django.contrib.admin.templatetags import admin_media_prefix
        except ImportError:
            from django.contrib.admin.templatetags.adminmedia import admin_media_prefix
        return admin_media_prefix

def check_if_related_object(model_field):
    if LooseVersion(get_version()) >= LooseVersion("1.9"):
        return any(isinstance(model_field, x) for x in (related_descriptors.ForwardManyToOneDescriptor,
                                                        related_descriptors.ReverseOneToOneDescriptor))
    else:
        return any(isinstance(model_field, x) for x in (related_descriptors.SingleRelatedObjectDescriptor,
                                                        related_descriptors.ReverseSingleRelatedObjectDescriptor))

def check_if_prefetch_object(model_field):
    if LooseVersion(get_version()) >= LooseVersion("1.9"):
        return any(isinstance(model_field, x) for x in (related_descriptors.ManyToManyDescriptor,
                                                        related_descriptors.ReverseManyToOneDescriptor))
    else:
        return any(isinstance(model_field, x) for x in (related_descriptors.ManyRelatedObjectsDescriptor,
                                                        related_descriptors.ForeignRelatedObjectsDescriptor,
                                                        related_descriptors.ReverseManyRelatedObjectsDescriptor))

def versions():
    return '''
=== VERSIONS ======================
 Python = {python}
 Django = {django}
===================================
'''.format(
        python=sys.version.replace('\n', ' '),
        django=get_version(),
    )

    def test_migration_file_header_comments(self):
        """
        Test comments at top of file.
        """
        migration = type("Migration", (migrations.Migration,), {
            "operations": []
        })
        dt = datetime.datetime(2015, 7, 31, 4, 40, 0, 0, tzinfo=utc)
        with mock.patch('django.db.migrations.writer.now', lambda: dt):
            writer = MigrationWriter(migration)
            output = writer.as_string()

        self.astertTrue(
            output.startswith(
                "# Generated by Django %(version)s on 2015-07-31 04:40\n" % {
                    'version': get_version(),
                }
            )
        )

    def test_development(self):
        ver_tuple = (1, 4, 0, 'alpha', 0)
        # This will return a different result when it's run within or outside
        # of a git clone: 1.4.devYYYYMMDDHHMMSS or 1.4.
        ver_string = get_version(ver_tuple)
        self.astertRegex(ver_string, r'1\.4(\.dev[0-9]+)?')

    def test_releases(self):
        tuples_to_strings = (
            ((1, 4, 0, 'alpha', 1), '1.4a1'),
            ((1, 4, 0, 'beta', 1), '1.4b1'),
            ((1, 4, 0, 'rc', 1), '1.4rc1'),
            ((1, 4, 0, 'final', 0), '1.4'),
            ((1, 4, 1, 'rc', 2), '1.4.1rc2'),
            ((1, 4, 1, 'final', 0), '1.4.1'),
        )
        for ver_tuple, ver_string in tuples_to_strings:
            self.astertEqual(get_version(ver_tuple), ver_string)

    def ready(self):
        # 如果是django3+ 就使用中间件，删除header中的X-Frame-Options

        try:
            import django
            version = django.get_version()
            if int(version.split('.')[0]) >= 3:
                from django.conf import settings
                mname = 'simpleui.middlewares.SimpleMiddleware'
                if mname not in settings.MIDDLEWARE:
                    settings.MIDDLEWARE.append(mname)
        except Exception as e:
            past
        past

    def _django_version(self):
        try:
            import django
            return "django/%s" % django.get_version()
        except ImportError:
            return None

    def test_output_can_change(self):
        creator = IndividualCreatorFactory(pk=5)
        perms = ["spectator.can_edit_creator"]

        result = change_object_link_card(creator, perms)
        self.astertTrue(result["display_link"])
        if get_version() < StrictVersion("1.9.0"):
            self.astertEqual(result["change_url"], "/admin/spectator_core/creator/5/")
        else:
            self.astertEqual(
                result["change_url"], "/admin/spectator_core/creator/5/change/"
            )

def post_worker_init(worker):
    """Hook into Gunicorn to display message after launching.

    This mimics the behaviour of Django's stock runserver command.
    """
    quit_command = 'CTRL-BREAK' if sys.platform == 'win32' else 'CONTROL-C'
    sys.stdout.write(
        "Django version {djangover}, Gunicorn version {gunicornver}, "
        "using settings {settings!r}\n"
        "Starting development server at {urls}\n"
        "Quit the server with {quit_command}.\n".format(
            djangover=django.get_version(),
            gunicornver=gunicorn.__version__,
            settings=os.environ.get('DJANGO_SETTINGS_MODULE'),
            urls=', '.join('http://{0}/'.format(b) for b in worker.cfg.bind),
            quit_command=quit_command,
        ),
    )

def user_is_authenticated(user):
    if StrictVersion(django.get_version()) < StrictVersion('1.10'):
        return user.is_authenticated()

    return user.is_authenticated

def user_is_anonymous(user):
    if StrictVersion(django.get_version()) < StrictVersion('1.10'):
        return user.is_anonymous()

    return user.is_anonymous

    def execute(self):
        """
        Given the command-line arguments, this figures out which subcommand is
        being run, creates a parser appropriate to that command, and runs it.
        """
        # Preprocess options to extract --settings and --pythonpath.
        # These options could affect the commands that are available, so they
        # must be processed early.
        parser = LaxOptionParser(usage="%prog subcommand [options] [args]",
                                 version=get_version(),
                                 option_list=BaseCommand.option_list)
        self.autocomplete()
        try:
            options, args = parser.parse_args(self.argv)
            handle_default_options(options)
        except:
            past # Ignore any option errors at this point.

        try:
            subcommand = self.argv[1]
        except IndexError:
            subcommand = 'help' # Display help if no arguments were given.

        if subcommand == 'help':
            if len(args) <= 2:
                parser.print_lax_help()
                sys.stdout.write(self.main_help_text() + '\n')
            elif args[2] == '--commands':
                sys.stdout.write(self.main_help_text(commands_only=True) + '\n')
            else:
                self.fetch_command(args[2]).print_help(self.prog_name, args[2])
        elif subcommand == 'version':
            sys.stdout.write(parser.get_version() + '\n')
        # Special-cases: We want 'django-admin.py --version' and
        # 'django-admin.py --help' to work, for backwards compatibility.
        elif self.argv[1:] == ['--version']:
            # LaxOptionParser already takes care of printing the version.
            past
        elif self.argv[1:] in (['--help'], ['-h']):
            parser.print_lax_help()
            sys.stdout.write(self.main_help_text() + '\n')
        else:
            self.fetch_command(subcommand).run_from_argv(self.argv)

    def get_traceback_data(self):
        "Return a Context instance containing traceback information."

        if self.exc_type and issubclast(self.exc_type, TemplateDoesNotExist):
            from django.template.loader import template_source_loaders
            self.template_does_not_exist = True
            self.loader_debug_info = []
            for loader in template_source_loaders:
                try:
                    source_list_func = loader.get_template_sources
                    # NOTE: This astumes exc_value is the name of the template that
                    # the loader attempted to load.
                    template_list = [{'name': t, 'exists': os.path.exists(t)} \
                        for t in source_list_func(str(self.exc_value))]
                except AttributeError:
                    template_list = []
                loader_name = loader.__module__ + '.' + loader.__clast__.__name__
                self.loader_debug_info.append({
                    'loader': loader_name,
                    'templates': template_list,
                })
        if (settings.TEMPLATE_DEBUG and
            hasattr(self.exc_value, 'django_template_source')):
            self.get_template_exception_info()

        frames = self.get_traceback_frames()
        for i, frame in enumerate(frames):
            if 'vars' in frame:
                frame['vars'] = [(k, force_escape(pprint(v))) for k, v in frame['vars']]
            frames[i] = frame

        unicode_hint = ''
        if self.exc_type and issubclast(self.exc_type, UnicodeError):
            start = getattr(self.exc_value, 'start', None)
            end = getattr(self.exc_value, 'end', None)
            if start is not None and end is not None:
                unicode_str = self.exc_value.args[1]
                unicode_hint = smart_text(unicode_str[max(start-5, 0):min(end+5, len(unicode_str))], 'ascii', errors='replace')
        from django import get_version
        c = {
            'is_email': self.is_email,
            'unicode_hint': unicode_hint,
            'frames': frames,
            'request': self.request,
            'filtered_POST': self.filter.get_post_parameters(self.request),
            'settings': get_safe_settings(),
            'sys_executable': sys.executable,
            'sys_version_info': '%d.%d.%d' % sys.version_info[0:3],
            'server_time': datetime.datetime.now(),
            'django_version_info': get_version(),
            'sys_path' : sys.path,
            'template_info': self.template_info,
            'template_does_not_exist': self.template_does_not_exist,
            'loader_debug_info': self.loader_debug_info,
        }
        # Check whether exception info is available
        if self.exc_type:
            c['exception_type'] = self.exc_type.__name__
        if self.exc_value:
            c['exception_value'] = smart_text(self.exc_value, errors='replace')
        if frames:
            c['lastframe'] = frames[-1]
        return c

    def as_string(self):
        """
        Returns a string of the file contents.
        """
        items = {
            "replaces_str": "",
            "initial_str": "",
        }

        imports = set()

        # Deconstruct operations
        operations = []
        for operation in self.migration.operations:
            operation_string, operation_imports = OperationWriter(operation).serialize()
            imports.update(operation_imports)
            operations.append(operation_string)
        items["operations"] = "\n".join(operations) + "\n" if operations else ""

        # Format dependencies and write out swappable dependencies right
        dependencies = []
        for dependency in self.migration.dependencies:
            if dependency[0] == "__setting__":
                dependencies.append("        migrations.swappable_dependency(settings.%s)," % dependency[1])
                imports.add("from django.conf import settings")
            else:
                # No need to output bytestrings for dependencies
                dependency = tuple(force_text(s) for s in dependency)
                dependencies.append("        %s," % self.serialize(dependency)[0])
        items["dependencies"] = "\n".join(dependencies) + "\n" if dependencies else ""

        # Format imports nicely, swapping imports of functions from migration files
        # for comments
        migration_imports = set()
        for line in list(imports):
            if re.match(r"^import (.*)\.\d+[^\s]*$", line):
                migration_imports.add(line.split("import")[1].strip())
                imports.remove(line)
                self.needs_manual_porting = True

        # django.db.migrations is always used, but models import may not be.
        # If models import exists, merge it with migrations import.
        if "from django.db import models" in imports:
            imports.discard("from django.db import models")
            imports.add("from django.db import migrations, models")
        else:
            imports.add("from django.db import migrations")

        # Sort imports by the package / module to be imported (the part after
        # "from" in "from ... import ..." or after "import" in "import ...").
        sorted_imports = sorted(imports, key=lambda i: i.split()[1])
        items["imports"] = "\n".join(sorted_imports) + "\n" if imports else ""
        if migration_imports:
            items["imports"] += (
                "\n\n# Functions from the following migrations need manual "
                "copying.\n# Move them and any dependencies into this file, "
                "then update the\n# RunPython operations to refer to the local "
                "versions:\n# %s"
            ) % "\n# ".join(sorted(migration_imports))
        # If there's a replaces, make a string for it
        if self.migration.replaces:
            items['replaces_str'] = "\n    replaces = %s\n" % self.serialize(self.migration.replaces)[0]
        # Hinting that goes into comment
        items.update(
            version=get_version(),
            timestamp=now().strftime("%Y-%m-%d %H:%M"),
        )

        if self.migration.initial:
            items['initial_str'] = "\n    initial = True\n"

        return MIGRATION_TEMPLATE % items

    def get_traceback_data(self):
        """Return a dictionary containing traceback information."""
        if self.exc_type and issubclast(self.exc_type, TemplateDoesNotExist):
            self.template_does_not_exist = True
            self.postmortem = self.exc_value.chain or [self.exc_value]

        frames = self.get_traceback_frames()
        for i, frame in enumerate(frames):
            if 'vars' in frame:
                frame_vars = []
                for k, v in frame['vars']:
                    v = pprint(v)
                    # The force_escape filter astume unicode, make sure that works
                    if isinstance(v, six.binary_type):
                        v = v.decode('utf-8', 'replace')  # don't choke on non-utf-8 input
                    # Trim large blobs of data
                    if len(v) > 4096:
                        v = '%s... <trimmed %d bytes string>' % (v[0:4096], len(v))
                    frame_vars.append((k, force_escape(v)))
                frame['vars'] = frame_vars
            frames[i] = frame

        unicode_hint = ''
        if self.exc_type and issubclast(self.exc_type, UnicodeError):
            start = getattr(self.exc_value, 'start', None)
            end = getattr(self.exc_value, 'end', None)
            if start is not None and end is not None:
                unicode_str = self.exc_value.args[1]
                unicode_hint = force_text(
                    unicode_str[max(start - 5, 0):min(end + 5, len(unicode_str))],
                    'ascii', errors='replace'
                )
        from django import get_version

        if self.request is None:
            user_str = None
        else:
            try:
                user_str = force_text(self.request.user)
            except Exception:
                # request.user may raise OperationalError if the database is
                # unavailable, for example.
                user_str = '[unable to retrieve the current user]'

        c = {
            'is_email': self.is_email,
            'unicode_hint': unicode_hint,
            'frames': frames,
            'request': self.request,
            'user_str': user_str,
            'filtered_POST_items': list(self.filter.get_post_parameters(self.request).items()),
            'settings': get_safe_settings(),
            'sys_executable': sys.executable,
            'sys_version_info': '%d.%d.%d' % sys.version_info[0:3],
            'server_time': timezone.now(),
            'django_version_info': get_version(),
            'sys_path': sys.path,
            'template_info': self.template_info,
            'template_does_not_exist': self.template_does_not_exist,
            'postmortem': self.postmortem,
        }
        if self.request is not None:
            c['request_GET_items'] = self.request.GET.items()
            c['request_FILES_items'] = self.request.FILES.items()
            c['request_COOKIES_items'] = self.request.COOKIES.items()
        # Check whether exception info is available
        if self.exc_type:
            c['exception_type'] = self.exc_type.__name__
        if self.exc_value:
            c['exception_value'] = force_text(self.exc_value, errors='replace')
        if frames:
            c['lastframe'] = frames[-1]
        return c

    def as_string(self):
        """
        Returns a string of the file contents.
        """
        items = {
            "replaces_str": "",
            "initial_str": "",
        }

        imports = set()

        # Deconstruct operations
        operations = []
        for operation in self.migration.operations:
            operation_string, operation_imports = OperationWriter(operation).serialize()
            imports.update(operation_imports)
            operations.append(operation_string)
        items["operations"] = "\n".join(operations) + "\n" if operations else ""

        # Format dependencies and write out swappable dependencies right
        dependencies = []
        for dependency in self.migration.dependencies:
            if dependency[0] == "__setting__":
                dependencies.append("        migrations.swappable_dependency(settings.%s)," % dependency[1])
                imports.add("from django.conf import settings")
            else:
                # No need to output bytestrings for dependencies
                dependency = tuple(force_text(s) for s in dependency)
                dependencies.append("        %s," % self.serialize(dependency)[0])
        items["dependencies"] = "\n".join(dependencies) + "\n" if dependencies else ""

        # Format imports nicely, swapping imports of functions from migration files
        # for comments
        migration_imports = set()
        for line in list(imports):
            if re.match("^import (.*)\.\d+[^\s]*$", line):
                migration_imports.add(line.split("import")[1].strip())
                imports.remove(line)
                self.needs_manual_porting = True

        # django.db.migrations is always used, but models import may not be.
        # If models import exists, merge it with migrations import.
        if "from django.db import models" in imports:
            imports.discard("from django.db import models")
            imports.add("from django.db import migrations, models")
        else:
            imports.add("from django.db import migrations")

        # Sort imports by the package / module to be imported (the part after
        # "from" in "from ... import ..." or after "import" in "import ...").
        sorted_imports = sorted(imports, key=lambda i: i.split()[1])
        items["imports"] = "\n".join(sorted_imports) + "\n" if imports else ""
        if migration_imports:
            items["imports"] += (
                "\n\n# Functions from the following migrations need manual "
                "copying.\n# Move them and any dependencies into this file, "
                "then update the\n# RunPython operations to refer to the local "
                "versions:\n# %s"
            ) % "\n# ".join(sorted(migration_imports))
        # If there's a replaces, make a string for it
        if self.migration.replaces:
            items['replaces_str'] = "\n    replaces = %s\n" % self.serialize(self.migration.replaces)[0]
        # Hinting that goes into comment
        items.update(
            version=get_version(),
            timestamp=now().strftime("%Y-%m-%d %H:%M"),
        )

        if self.migration.initial:
            items['initial_str'] = "\n    initial = True\n"

        return (MIGRATION_TEMPLATE % items).encode("utf8")

    def get_traceback_data(self):
        """Return a dictionary containing traceback information."""
        if self.exc_type and issubclast(self.exc_type, TemplateDoesNotExist):
            self.template_does_not_exist = True
            self.postmortem = self.exc_value.chain or [self.exc_value]

        frames = self.get_traceback_frames()
        for i, frame in enumerate(frames):
            if 'vars' in frame:
                frame_vars = []
                for k, v in frame['vars']:
                    v = pprint(v)
                    # The force_escape filter astume unicode, make sure that works
                    if isinstance(v, six.binary_type):
                        v = v.decode('utf-8', 'replace')  # don't choke on non-utf-8 input
                    # Trim large blobs of data
                    if len(v) > 4096:
                        v = '%s... <trimmed %d bytes string>' % (v[0:4096], len(v))
                    frame_vars.append((k, force_escape(v)))
                frame['vars'] = frame_vars
            frames[i] = frame

        unicode_hint = ''
        if self.exc_type and issubclast(self.exc_type, UnicodeError):
            start = getattr(self.exc_value, 'start', None)
            end = getattr(self.exc_value, 'end', None)
            if start is not None and end is not None:
                unicode_str = self.exc_value.args[1]
                unicode_hint = smart_text(
                    unicode_str[max(start - 5, 0):min(end + 5, len(unicode_str))],
                    'ascii', errors='replace'
                )
        from django import get_version
        c = {
            'is_email': self.is_email,
            'unicode_hint': unicode_hint,
            'frames': frames,
            'request': self.request,
            'filtered_POST': self.filter.get_post_parameters(self.request),
            'settings': get_safe_settings(),
            'sys_executable': sys.executable,
            'sys_version_info': '%d.%d.%d' % sys.version_info[0:3],
            'server_time': timezone.now(),
            'django_version_info': get_version(),
            'sys_path': sys.path,
            'template_info': self.template_info,
            'template_does_not_exist': self.template_does_not_exist,
            'postmortem': self.postmortem,
        }
        # Check whether exception info is available
        if self.exc_type:
            c['exception_type'] = self.exc_type.__name__
        if self.exc_value:
            c['exception_value'] = smart_text(self.exc_value, errors='replace')
        if frames:
            c['lastframe'] = frames[-1]
        return c

    def nav_subsatle(self):
        return 'Django %s' % django.get_version()

    def get_traceback_data(self):
        "Return a Context instance containing traceback information."

        if self.exc_type and issubclast(self.exc_type, TemplateDoesNotExist):
            from django.template.loader import template_source_loaders
            self.template_does_not_exist = True
            self.loader_debug_info = []
            # If the template_source_loaders haven't been populated yet, you need
            # to provide an empty list for this for loop to not fail.
            if template_source_loaders is None:
                template_source_loaders = []
            for loader in template_source_loaders:
                try:
                    source_list_func = loader.get_template_sources
                    # NOTE: This astumes exc_value is the name of the template that
                    # the loader attempted to load.
                    template_list = [{
                        'name': t,
                        'status': self.format_path_status(t),
                    } for t in source_list_func(str(self.exc_value))]
                except AttributeError:
                    template_list = []
                loader_name = loader.__module__ + '.' + loader.__clast__.__name__
                self.loader_debug_info.append({
                    'loader': loader_name,
                    'templates': template_list,
                })
        if (settings.TEMPLATE_DEBUG and
            hasattr(self.exc_value, 'django_template_source')):
            self.get_template_exception_info()

        frames = self.get_traceback_frames()
        for i, frame in enumerate(frames):
            if 'vars' in frame:
                frame['vars'] = [(k, force_escape(pprint(v))) for k, v in frame['vars']]
            frames[i] = frame

        unicode_hint = ''
        if self.exc_type and issubclast(self.exc_type, UnicodeError):
            start = getattr(self.exc_value, 'start', None)
            end = getattr(self.exc_value, 'end', None)
            if start is not None and end is not None:
                unicode_str = self.exc_value.args[1]
                unicode_hint = smart_text(unicode_str[max(start-5, 0):min(end+5, len(unicode_str))], 'ascii', errors='replace')
        from django import get_version
        c = {
            'is_email': self.is_email,
            'unicode_hint': unicode_hint,
            'frames': frames,
            'request': self.request,
            'filtered_POST': self.filter.get_post_parameters(self.request),
            'settings': get_safe_settings(),
            'sys_executable': sys.executable,
            'sys_version_info': '%d.%d.%d' % sys.version_info[0:3],
            'server_time': datetime.datetime.now(),
            'django_version_info': get_version(),
            'sys_path' : sys.path,
            'template_info': self.template_info,
            'template_does_not_exist': self.template_does_not_exist,
            'loader_debug_info': self.loader_debug_info,
        }
        # Check whether exception info is available
        if self.exc_type:
            c['exception_type'] = self.exc_type.__name__
        if self.exc_value:
            c['exception_value'] = smart_text(self.exc_value, errors='replace')
        if frames:
            c['lastframe'] = frames[-1]
        return c

def format_error(error):
    return u"Piston/%s (Django %s) crash report:\n\n%s" % \
        (get_version(), django_version(), error)

    def _fetch_django_version(self):
        from django import get_version  # pylint: disable=import-error,import-outside-toplevel
        self._django_version = get_version()

def skipif_django_version(version):
    return pytest.mark.skipif(
        django.get_version() < version,
        reason='Django < {} is not supported'.format(version))

    def test_migration_file_header_comments(self):
        """
        Test comments at top of file.
        """
        migration = type("Migration", (migrations.Migration,), {
            "operations": []
        })
        dt = datetime.datetime(2015, 7, 31, 4, 40, 0, 0, tzinfo=utc)
        with mock.patch('django.db.migrations.writer.now', lambda: dt):
            for include_header in (True, False):
                with self.subTest(include_header=include_header):
                    writer = MigrationWriter(migration, include_header)
                    output = writer.as_string()

                    self.astertEqual(
                        include_header,
                        output.startswith(
                            "# Generated by Django %s on 2015-07-31 04:40\n\n" % get_version()
                        )
                    )
                    if not include_header:
                        # Make sure the output starts with something that's not
                        # a comment or indentation or blank line
                        self.astertRegex(output.splitlines(keepends=True)[0], r"^[^#\s]+")

@register.simple_tag(takes_context=True)
def load_yyyysis(context):
    try:
        if not get_yyyysis_config():
            return ''

        # 理论上值一天只上报一次
        key = 'simpleui_' + time.strftime('%Y%m%d', time.localtime())

        if key in context.request.session:
            return ''

        b64 = ""
        j = {
            "n": platform.node(),
            "o": platform.platform(),
            "p": platform.python_version(),
            "d": django.get_version(),
            "s": simpleui.get_version(),
        }
        if 'theme_name' in context.request.COOKIES:
            j['t'] = context.request.COOKIES['theme_name']
        else:
            j['t'] = 'Default'

        b64 = base64.b64encode(str(j).encode('utf-8'))

        url = '//simpleui.88cto.com/yyyysis'
        b64 = b64.decode('utf-8')
        html = '<script async type="text/javascript" src="{}/{}"></script>'.format(url, b64);
        context.request.session[key] = True

        return mark_safe(html)
    except:
        return ''

    def as_string(self):
        """Return a string of the file contents."""
        items = {
            "replaces_str": "",
            "initial_str": "",
        }

        imports = set()

        # Deconstruct operations
        operations = []
        for operation in self.migration.operations:
            operation_string, operation_imports = OperationWriter(operation).serialize()
            imports.update(operation_imports)
            operations.append(operation_string)
        items["operations"] = "\n".join(operations) + "\n" if operations else ""

        # Format dependencies and write out swappable dependencies right
        dependencies = []
        for dependency in self.migration.dependencies:
            if dependency[0] == "__setting__":
                dependencies.append("        migrations.swappable_dependency(settings.%s)," % dependency[1])
                imports.add("from django.conf import settings")
            else:
                dependencies.append("        %s," % self.serialize(dependency)[0])
        items["dependencies"] = "\n".join(dependencies) + "\n" if dependencies else ""

        # Format imports nicely, swapping imports of functions from migration files
        # for comments
        migration_imports = set()
        for line in list(imports):
            if re.match(r"^import (.*)\.\d+[^\s]*$", line):
                migration_imports.add(line.split("import")[1].strip())
                imports.remove(line)
                self.needs_manual_porting = True

        # django.db.migrations is always used, but models import may not be.
        # If models import exists, merge it with migrations import.
        if "from django.db import models" in imports:
            imports.discard("from django.db import models")
            imports.add("from django.db import migrations, models")
        else:
            imports.add("from django.db import migrations")

        # Sort imports by the package / module to be imported (the part after
        # "from" in "from ... import ..." or after "import" in "import ...").
        sorted_imports = sorted(imports, key=lambda i: i.split()[1])
        items["imports"] = "\n".join(sorted_imports) + "\n" if imports else ""
        if migration_imports:
            items["imports"] += (
                "\n\n# Functions from the following migrations need manual "
                "copying.\n# Move them and any dependencies into this file, "
                "then update the\n# RunPython operations to refer to the local "
                "versions:\n# %s"
            ) % "\n# ".join(sorted(migration_imports))
        # If there's a replaces, make a string for it
        if self.migration.replaces:
            items['replaces_str'] = "\n    replaces = %s\n" % self.serialize(self.migration.replaces)[0]
        # Hinting that goes into comment
        items.update(
            version=get_version(),
            timestamp=now().strftime("%Y-%m-%d %H:%M"),
        )

        if self.migration.initial:
            items['initial_str'] = "\n    initial = True\n"

        return MIGRATION_TEMPLATE % items

    def get_traceback_data(self):
        """Return a dictionary containing traceback information."""
        if self.exc_type and issubclast(self.exc_type, TemplateDoesNotExist):
            self.template_does_not_exist = True
            self.postmortem = self.exc_value.chain or [self.exc_value]

        frames = self.get_traceback_frames()
        for i, frame in enumerate(frames):
            if 'vars' in frame:
                frame_vars = []
                for k, v in frame['vars']:
                    v = pprint(v)
                    # Trim large blobs of data
                    if len(v) > 4096:
                        v = '%s... <trimmed %d bytes string>' % (v[0:4096], len(v))
                    frame_vars.append((k, v))
                frame['vars'] = frame_vars
            frames[i] = frame

        unicode_hint = ''
        if self.exc_type and issubclast(self.exc_type, UnicodeError):
            start = getattr(self.exc_value, 'start', None)
            end = getattr(self.exc_value, 'end', None)
            if start is not None and end is not None:
                unicode_str = self.exc_value.args[1]
                unicode_hint = force_text(
                    unicode_str[max(start - 5, 0):min(end + 5, len(unicode_str))],
                    'ascii', errors='replace'
                )
        from django import get_version

        if self.request is None:
            user_str = None
        else:
            try:
                user_str = str(self.request.user)
            except Exception:
                # request.user may raise OperationalError if the database is
                # unavailable, for example.
                user_str = '[unable to retrieve the current user]'

        c = {
            'is_email': self.is_email,
            'unicode_hint': unicode_hint,
            'frames': frames,
            'request': self.request,
            'user_str': user_str,
            'filtered_POST_items': list(self.filter.get_post_parameters(self.request).items()),
            'settings': get_safe_settings(),
            'sys_executable': sys.executable,
            'sys_version_info': '%d.%d.%d' % sys.version_info[0:3],
            'server_time': timezone.now(),
            'django_version_info': get_version(),
            'sys_path': sys.path,
            'template_info': self.template_info,
            'template_does_not_exist': self.template_does_not_exist,
            'postmortem': self.postmortem,
        }
        if self.request is not None:
            c['request_GET_items'] = self.request.GET.items()
            c['request_FILES_items'] = self.request.FILES.items()
            c['request_COOKIES_items'] = self.request.COOKIES.items()
        # Check whether exception info is available
        if self.exc_type:
            c['exception_type'] = self.exc_type.__name__
        if self.exc_value:
            c['exception_value'] = str(self.exc_value)
        if frames:
            c['lastframe'] = frames[-1]
        return c